Rate-regulating device for fluids.



F. N. GONNET. RATE REGULATING DEVICE FOR FLUIDS.

APPLICATION FILED OCT. 3, 1907..

Patented Aug. 3, 1909.

PATENT OFFICE.

FREDERICK N. OONNET, OF PROVIDENCE, RHODE ISLAND.

R'A'I'E-RE GULKTING DEVICE FOR FLUIDS.

Specification of Letters Patent.

Patented Aug. 3, 1909.

Application filed October 3, 1907. Serial No. 395,735.

'To all whom it may concern:

Be it known that I, FRED-Enron N.'Gonnnr a citizen of the United-States,residing at the city of Providence, in the county of Providence andState of Rhode Island, have invented certain new and useful Improvementsin Rate-Regulating Devices for Fluids, ofwhich the following isaspeciiication, reference being :had therein to the accompanyingdrawing.

This invention has for its object to provide a simple and effectivedevice for automatically controlling the rate of flow of liquids orgases through a given aperture;

This device may be used for any desired purpose but the same is moreparticularly designed formse in controlling the rate of flow from areservoir or the like from which large quantities of'water are used.

On account of the constantly changing condition of the filter beds, aswell as from various other causes, the pressure which conated 'trols therate of flowof the efiluent is con tinually varying andit is foundnecessary in order to maintain a constant delivery to proe vide a valve,or the like, in the efliuent pipe and automatically control the openingthrou h said pipe through mechanism actuy the differential pressures attwo points in said pipe.

In carrying out my present invention I provide an arrangement somewhatsimplified rom that illustrated in my patent numbered 863,264, in whichpresent application the valve actuating piston is connected directly tothe throat or reduced portion of the tube on one side and to theup-stream or highpressure side of the tube on the o posite side,

whereby the difference between t e pressures at these two points of themain is caused to actuate said piston to move the valve and control theopening whereby the rate of flow through said main is regulated. I a

I With these objects in view, theinvention consists of certain novelfeatures of construction, as will be more fully described andarticularly pointed out in the appended claims. In the accompanyingdrawings: Figure 1 illustrates a diagrammatic view of the apparatuspartly in section illustrating a simplified form and the o eration ofthe same. Figs. 2, 3 and 4 show erent styles or ty es of balancedvalves,namely, the dou le puppet, the piston and the butterfly, which maybeoperated by a piston to control the flow through the main.

Referring to the drawings at '1 is the main pipe provided with acontracted throat portion2, which construction is similar to thato'f theWell known Venturi-tube. Located on the downstream side of this throatis shown a gate valve 3 adapted to be supported in any convenient Way tobe raised and lowered .into and out-of said tube so as to control theopeni'ng therein, but I do not confine myself to this-particular styleof valve, as any valve, whether balanced orotherwise, may be usedforcontrolling the-opening through this pipe. Apylinder 4 in which thepiston 5 is :adapted to reciprocate may be located adjacent the saidvalve 3, or in any other convenient place. A rod 6 may be connected tosaid piston in any convenient way and is shown as Ipassing down throughthe lower end-of the cy inder 4, at which point it is connected to theupper end of the valve 3. Said rod also shown as extending up throughthe head of the cylinder 4 where the same is connected to thecounterbalance weight 7 through the arm 8 which ispivoted at 9, wherebythe weight of the iston and the valve may be nicely counterbalanced, andthe valve normally held in its open position, if desired.

At 10 is a pipe leading from the throat 2 of v the tube to the lowerside of the piston 5, while the upper end of the cylinder 4 is connected by the pipe 11 to the u -stream or high pressure portion of saidto e whereby uids or gases used are forced through the main pipe in thedirection of the arrow, said pipe being provided with a contractedportion forming a throat which acts in such a a manner upon the fluidassing through that the pressure is less at t e throat than at theenlarged portion on the up-streamside of the same, and the greater thevelocity, the greater the diflerence of pressures at these two points.

It is found where water is used in large quantities, such as thatflowing from a city reservoir or the like, that the rate of flow is a tto vary fromavariety of causes, and

t at it is'very desirable to arrange means whereby this rate may beautomatically controlled so that the city supply be more uniform. Inorder to accomplish this in the simplest possible manner I have provideda cylinder containin a piston, the same being connected to'a va veadapted to control the opening through the main, the reduced pres- -beautomatica stantially uniform rate.

sure from the throat portion of said plpe is conducted to one side ofsaid piston, while the higher pressure from the up-stream portion of thepipe is conducted to the opposite side of the ]piston, said piston andvalvesbeing norma y held in their raised or opened position by meansofthe counterweight 7.

' As soon as the-flow begins throu h the tube the greater pressure'wlllnatural y act upon the piston and force it down to close the valve aslight distance. An increase from this rate of flow will'cause a greaterressure to further close the valve, while w en the rate of .flow isreduced the pressures are nearer equalized and the valve will again beraised-to keep the rate of flow constant.

The deviceconstructed to operate in the manner illustrated is extremelysimple and gractical in its operation and by its use the ow oflargeqliliantities through a pi e may lated so that the delivery shall be ata sub- H-aving thus described my invention, what j I claimas new anddesire to secure by Letters Patent, is;

portion or threat, a va y controlled and nice y regu- I in presence oftwo witnesses.

1. A device of; the character described comprising a main pipe havin areduced vemsa1 pipe, a 1ston for operating said valve, a counter alancefor said piston and valve, and means portion or throat, a valve in saidpi e, an operatin piston connected to said va ve, an f adjustab e.counterbalancing weight acting on said .piston and valveto hold thelatter normally open, and means whereby the high pressure portion of themain is adapted to communicate with one side ofsa d piston and the lowpressure portion with the oppoi site side of'said piston,wherebysaidplston 'is operatedto automatically determ ne the position ofsaidfvalveand control the rate of ow through the main. o Intestimonywhereof I afiix my s gnature FREDERICK co hET." Witnes ses:

WM. R. TILLINGHAST,

Howimn E. Burrow.-

